feat(storybook): add Storybook 8 with Tailwind v4 pulling stories from @repo/ui

apps/storybook/.storybook/main.ts

@@ -0,0 +1,20 @@
+import type { StorybookConfig } from "@storybook/react-vite";
+
+const config: StorybookConfig = {
+  framework: "@storybook/react-vite",
+  stories: ["../../../packages/ui/src/**/*.stories.@(ts|tsx)"],
+  addons: ["@storybook/addon-essentials"],
+  docs: {
+    autodocs: "tag",
+  },
+  async viteFinal(config) {
+    const { mergeConfig } = await import("vite");
+    const tailwindPlugin = await import("@tailwindcss/vite");
+
+    return mergeConfig(config, {
+      plugins: [tailwindPlugin.default()],
+    });
+  },
+};
+
+export default config;